Threats Tagged 'ghsa-8x7w-42q6-mv4p'
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Threats Tagged 'ghsa-8x7w-42q6-mv4p'
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In the Linux kernel, the following vulnerability has been resolved: netfilter: reject zero shift in nft_bitwise Reject zero shift operands for nft_bitwise left and right shift expressions during initialization. The carry propagation logic computes the carry from the adjacent 32-bit word using BITS_PER_TYPE(u32) - shift. A zero shift operand turns this into a 32-bit shift, which is undefined behaviour. Reject zero shift operands in the control plane, alongside the existing check for values greater than or equal to 32, so malformed rules never reach the packet path. Join the discussion | GCVE Database | 05/27/2026, 15:33:24 UTC Added: 07/17/2026, 10:20:57 UTC |
A vulnerability in the Linux kernel's netfilter nft_bitwise component allowed zero shift operands in left and right shift expressions during initialization. This caused undefined behavior due to improper carry propagation logic when a zero shift was used. The issue was addressed by rejecting zero shift operands in the control plane alongside existing checks for shifts greater than or equal to 32, preventing malformed rules from reaching the packet processing path. Join the discussion | GCVE Database | 05/27/2026, 15:33:24 UTC Added: 05/28/2026, 20:54:23 UTC |
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